Computerized Training and Evaluation of Visual Discrimination Abilities

Applications: The present invention is an application for retraining and evaluating a patient’s damaged visual system (either cortical or subcortical).  The principles of this method could be applied to retrain patients with damage to other sensory systems, including the somatosensory or auditory systems. This technique has applications for patients with cortical blindness and other forms of extra-ocular visual impairments, patients with neurodegenerative diseases (Alzheimer’s, Parkinson’s), normal, aging humans interested in retarding visual decline, athletes and military personnel who need to improve visual performance.

Advantages: The present invention is novel in its approach in that it uses complex, dynamic visual stimuli (i.e.: random dot kinematograms), which are spatially extended.  This method is the first restraining paradigm that aims to retrain complex motion perception in humans.  This procedure requires the patient to make discrimination rather than a detection judgment.  The system is designed specifically to stimulate and increase function in higher level visual cortical areas affected by damage.  In addition, the present system pairs visual retraining with the evaluation of improvements in complex visual perception, in complex, naturalistic, environments-both real and virtual.


Recent Publications: Saionz EL, Tadin D, Melnick MD, Huxlin KR. "Functional preservation and enhanced capacity for visual restoration in subacute occipital stroke." Brain : a journal of neurology.. 2020 May 18; Epub 2020 May 18.


URV Reference Number: 6-1371
Patent Information:
Title Country Patent No. Issued Date
Systems and Methods for Improving Visual Discrimination United States 7,549,743 6/23/2009
For Information, Contact:
Joynita Sur (URV)
Licensing Manager
University of Rochester
Krystel Huxlin
Mary Hayhoe
Jeff Pelz